Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Industrial Production - Indexes and Gross Value," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "April 1983," Federal Reserve Bulletin (April 1983) : 119-120. https://fraser.stlouisfed.org/title/62/item/20500/toc/135601 , accessed on April 25, 2024.